org.apache.felix.shell/src/main/java/org/apache/felix/shell/impl/RefreshCommandImpl.java

/*
 *   Copyright 2005 The Apache Software Foundation
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 */
package org.apache.felix.shell.impl;

import java.io.PrintStream;

import org.apache.felix.shell.Command;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.packageadmin.PackageAdmin;

public class RefreshCommandImpl implements Command
{
    private BundleContext m_context = null;

    public RefreshCommandImpl(BundleContext context)
    {
        m_context = context;
    }

    public String getName()
    {
        return "refresh";
    }

    public String getUsage()
    {
        return "refresh";
    }

    public String getShortDescription()
    {
        return "refresh packages.";
    }

    public void execute(String s, PrintStream out, PrintStream err)
    {
        // Get package admin service.
        ServiceReference ref = m_context.getServiceReference(
            org.osgi.service.packageadmin.PackageAdmin.class.getName());
        if (ref == null)
        {
            out.println("PackageAdmin service is unavailable.");
            return;
        }

        PackageAdmin pa = (PackageAdmin) m_context.getService(ref);
        if (pa == null)
        {
            out.println("PackageAdmin service is unavailable.");
            return;
        }

        pa.refreshPackages(null);
    }
}